CLEAN HARBORS INC (CLH)

Current Report Filed: 2026-05-14

Key Insights

• Clean Harbors completed its acquisition of Terra Nova Solutions on May 14, 2026, representing a strategic expansion of the company's service capabilities and potential revenue growth through horizontal or vertical integration.
• The acquisition announcement was made via press release on the same date, indicating management's confidence in the deal completion and suggesting this was a material transaction requiring immediate market disclosure.
• As a Massachusetts-based environmental and waste management company, this acquisition likely expands Clean Harbors' addressable market or operational footprint, potentially enhancing competitive positioning in specialized environmental services.

Sentiment: Positive Significance: 7/10

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Insider Trading Filed: 2026-05-13

Key Insights

• Director Karyn Polito acquired 460 shares of CLH at $295.13 per share on May 11, 2026, representing a $135,759.80 investment, indicating insider confidence in the company's valuation.
• The transaction was executed as an open market purchase rather than through an option exercise or company plan, suggesting a voluntary personal investment by the director.
• Polito's total beneficial ownership increased to 3,475 shares following this acquisition, demonstrating continued accumulation of company stock despite the elevated share price.

Sentiment: Positive Significance: 5/10

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Insider Trading Filed: 2026-05-12

Key Insights

• Director Andrea Robertson made a charitable gift of 342 shares of CLH common stock on 05/11/2026, reducing her direct beneficial ownership from approximately 9,458 to 9,116 shares.
• The transaction was executed at $0 price per share, confirming this was a non-compensatory charitable donation rather than a market sale, indicating potential philanthropic activity by the director.
• Robertson maintains a modest direct shareholding of 9,116 shares as a director, suggesting limited significant personal financial stake in the company relative to typical executive-level insider positions.

Sentiment: Neutral Significance: 2/10

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Quarterly Report Filed: 2026-05-06

Key Insights

• The filing shows Q1 2026 results for Clean Harbors with two primary operating segments: Environmental Services and Safety-Kleen Sustainability Solutions, indicating a diversified business model across environmental and sustainability services.
• The company tracks detailed segment performance across multiple service lines including Technical Services, Industrial Services, Field and Emergency Response, and Safety-Kleen Environmental Services, suggesting complex operations requiring careful investor monitoring of segment-level profitability trends.
• Filing structure indicates presence of both US and Canadian operations with separate segment tracking, reflecting geographic diversification but also potential regulatory and currency exposure that investors should monitor.

Sentiment: Neutral Significance: 3/10

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Current Report Filed: 2026-05-06

Key Insights

• Clean Harbors filed a routine 8-K to announce Q1 2026 earnings results on May 6, 2026, with the full press release attached as Exhibit 99.1 containing detailed financial performance metrics.
• The filing was signed by Eric J. Dugas, Executive Vice President and Chief Financial Officer, indicating proper authorization and standard corporate disclosure procedures were followed.
• As a non-emerging growth company, Clean Harbors maintains standard SEC reporting requirements without extended transition periods for new accounting standards, reflecting its mature public company status.

Sentiment: Neutral Significance: 3/10

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Insider Trading Filed: 2026-03-19

Key Insights

• Marcy L. Reed, a director of Clean Harbors Inc., has sold 836 shares of the company's common stock, reducing her direct beneficial ownership to 5,081 shares.
• The sale was executed on March 18, 2026, at a price of $287.94 per share.
• This transaction may indicate a shift in Reed's investment strategy or liquidity needs, which could impact investor sentiment.

Sentiment: Neutral Significance: 4/10

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Insider Trading Filed: 2026-03-19

Key Insights

• Eric W. Gerstenberg, the Co-CEO of Clean Harbors Inc., has sold 1,000 shares of the company's common stock at $293 per share.
• This transaction reduces Gerstenberg's direct beneficial ownership of Clean Harbors shares to 38,877, which represents a small portion of his total holdings.
• Insider transactions can provide insights into management's outlook and confidence in the company's future performance.

Sentiment: Neutral Significance: 4/10

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Insider Trading Filed: 2026-03-17

Key Insights

• Rebecca Underwood, the President and Executive Vice President of Facilities at Clean Harbors Inc, has disposed of 1,401 shares of the company's common stock due to the company not achieving performance targets under its Long Term Equity Incentive Program.
• Underwood also paid tax liability by withholding 125 shares of the company's common stock, which is a common practice for executives when vesting restricted stock awards.
• The reported transactions provide insight into the executive's ownership and potential changes in their financial exposure to the company's stock performance.

Sentiment: Neutral Significance: 5/10

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Insider Trading Filed: 2026-03-17

Key Insights

• The reporting person Michael Battles, who is the Co-CEO of Clean Harbors Inc. (CLH), has disposed of 2,166 shares of common stock due to the company not achieving performance targets under its Long Term Equity Incentive Program.
• Battles has also paid the tax liability by withholding 1,148 shares of common stock in accordance with Rule 16b-3, indicating the company's compensation practices.
• The total number of shares beneficially owned by Battles has decreased from 97,538 to 95,387, which may signal a shift in his ownership position.

Sentiment: Neutral Significance: 5/10

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Insider Trading Filed: 2026-03-17

Key Insights

• Alan S. McKim, the Executive Chairman and Chief Technology Officer of Clean Harbors Inc., engaged in a transaction on March 13, 2026 where he disposed of 1,265 shares of common stock, likely to cover tax liabilities related to the vesting of securities.
• McKim continues to hold a significant beneficial ownership in Clean Harbors through various trusts, with over 2.2 million shares in total.
• The transaction appears to be a routine tax withholding event and does not indicate any major change in McKim's long-term ownership or leadership position within the company.

Sentiment: Neutral Significance: 3/10

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Insider Trading Filed: 2026-03-17

Key Insights

• Executive VP George L. Curtis disposed of 1,028 shares of common stock, indicating potential confidence in the company's performance.
• The company withheld 350 shares from Curtis to cover tax liabilities associated with vesting of securities, a common practice for executive compensation.
• The company did not achieve performance targets under its Long-Term Equity Incentive Program, resulting in the forfeiture of 1,028 shares of restricted stock.

Sentiment: Neutral Significance: 4/10

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Insider Trading Filed: 2026-03-17

Key Insights

• Eric J. Dugas, the EVP and CFO of Clean Harbors, Inc., reported a transaction where he forfeited 1,324 shares of restricted stock due to the company not achieving performance targets under its Long Term Equity Incentive Program.
• Dugas also reported paying tax liability by withholding 630 shares of common stock incident to the vesting of securities, indicating the company's compensation structure ties equity awards to performance metrics.
• The transaction suggests potential challenges in Clean Harbors' financial and operational performance, which investors should monitor closely.

Sentiment: Negative Significance: 6/10

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Insider Trading Filed: 2026-03-17

Key Insights

• The reporting person Charles H. Geer II, an EVP of the company, disposed of 139 shares of restricted stock due to the company not achieving performance targets under its Long Term Equity Incentive Program.
• Geer still holds 10,839 shares of the company's common stock, indicating his continued ownership and alignment with shareholders.
• The disposal of restricted shares suggests the company may have missed its performance goals, which could potentially impact investor sentiment.

Sentiment: Negative Significance: 6/10

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Insider Trading Filed: 2026-03-17

Key Insights

• The reporting person, Robert W. Harrison, an EVP and head of EHS at Clean Harbors Inc, sold 368 shares of common stock, likely due to the company not achieving performance targets under its Long Term Equity Incentive Program.
• Harrison also had 18 shares withheld to cover tax liabilities associated with the vesting of securities, indicating continued oversight and compliance with SEC regulations.
• The net decrease of 386 shares in Harrison's beneficial ownership of Clean Harbors stock suggests the company may be facing some challenges in meeting its performance goals.

Sentiment: Negative Significance: 6/10

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Insider Trading Filed: 2026-03-17

Key Insights

• The reporting person, Eric W. Gerstenberg, who is the Co-CEO of Clean Harbors Inc., has disposed of a significant amount of shares, including 2,166 shares of restricted stock that were forfeited due to the company not achieving performance targets.
• The reporting person has also paid his tax liability by withholding 977 shares of common stock, indicating a potential need for liquidity.
• The overall reduction in the reporting person's beneficial ownership of Clean Harbors Inc. shares may signal a change in his investment strategy or financial needs, which could impact investor sentiment.

Sentiment: Negative Significance: 6/10

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Insider Trading Filed: 2026-03-17

Key Insights

• The reporting person, Sharon M. Gabriel, the EVP/CIO of Clean Harbors Inc., has engaged in significant insider selling, disposing of 1,401 shares of the company's common stock.
• The shares were forfeited due to the company not achieving performance targets under its Long Term Equity Incentive Program, indicating potential underperformance or missed goals.
• However, the reporting person also paid tax liability by withholding 727 shares, which is a common practice for executives during vesting events.

Sentiment: Negative Significance: 6/10

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Insider Trading Filed: 2026-03-17

Key Insights

• The reporting person, Brian P. Weber, who is an Executive Vice President (CHESI) of Clean Harbors Inc., has disposed of a significant number of shares, including 1,869 shares of restricted stock that were forfeited due to the company not achieving performance targets.
• The reporting person has also sold an additional 4,683 shares, indicating a reduction in his overall beneficial ownership in the company.
• The timing and amount of these transactions suggest a possible change in the reporting person's investment strategy or a shift in the company's performance relative to its targets.

Sentiment: Negative Significance: 7/10

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Insider Trading Filed: 2026-03-05

Key Insights

• Alan S. McKim, the Executive Chairman and Chief Technology Officer of Clean Harbors Inc., has sold 100,000 shares of the company's common stock at $292.65 per share.
• McKim still maintains a substantial beneficial ownership in the company, with 2,065,368 shares directly held and an additional 201,120 shares held indirectly through various trusts.
• The sale represents a small portion of McKim's overall stake in the company, suggesting this may be a routine portfolio diversification or personal financial management transaction rather than a significant shift in his long-term outlook on the business.

Sentiment: Neutral Significance: 4/10

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Insider Trading Filed: 2026-02-24

Key Insights

• The reporting person, Eric W. Gerstenberg, who is the Co-CEO of Clean Harbors Inc. (CLH), has sold 2,500 shares of the company's common stock at an average price of $279.86 per share.
• This sale represents a relatively small portion (around 5%) of Gerstenberg's total beneficial ownership in the company, which remains at 43,020 shares.
• The transaction appears to be a routine sale by an insider, and does not necessarily indicate any significant concerns or changes in the company's outlook.

Sentiment: Neutral Significance: 3/10

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Insider Trading Filed: 2026-02-23

Key Insights

• Alan S. McKim, the Executive Chair and CTO of Clean Harbors, sold 100,000 shares of the company's common stock on February 19, 2026 at an average price of $281.14.
• McKim also made a charitable gift of 10,000 shares of Clean Harbors' common stock on the same date.
• Following the reported transactions, McKim beneficially owns 2,365,488 shares of Clean Harbors' common stock, either directly or indirectly through the McKim 2007 Trust and the McKim 2025 Annuity Trust.

Sentiment: Neutral Significance: 5/10

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